iframe {width: 72%;}


@media only screen and ( min-width: 950px ) {
    /* breites Browserfenster */
    body { background-color: #99FFFF;}
}
@media only screen and ( max-width: 440px ) {
    /* mobile Geräte */
    body { background-color: green;}
}
@media only screen and ( min-width: 440px ) and ( max-width: 950px ) {
    /* Tablets und mittlere Bildschirme */
    body { background-color: #6666CC;}
}

.bild {
    max-width: 100%;
    height: auto;
}

@media only screen and (max-width: 1199px) {
	iframe {width:70%; height:600px;}
}
@media only screen and (max-width: 979px) {
	iframe {width:80%; height:800px;}
}
@media only screen and (max-width: 767px) {
	iframe {width:90%; height:1200px;}
}
@media only screen and (max-width: 479px) {
	iframe {width:60%; height:2360px;}
}